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The Gibson Dual Extreme cat-back exhaust for 2004–2008 Ford F-150 FX4 5.4L is a stainless bolt-on system that exits behind the rear tires for an assertive look and powerful tone. Mandrel-bent tubing paired with a baffled Superflow CFT muffler and polished slash-cut tip provides aggressive sound with minimal interior drone. Dyno-tested to deliver typical gains around 15–20 horsepower; no welding required and supported by a lifetime limited warranty.
Gibson 04-08 Ford F-150 FX4 5.4L 2.5in Cat-Back Dual Extreme Exhaust - Stainless
